Fuel cell system

Abstract

The utility model provides a fuel cell system, which belongs to the technical field of fuel cells and comprises a system frame. The electric pile assembly is arranged on the system frame; the system auxiliary assembly comprises an air system structure arranged on the system frame, a hydrothermal system structure arranged on the system frame and a hydrogen system structure arranged on the system frame; the direct-current converter is arranged on the system frame; and the control assembly is arranged on the system frame, the control assembly comprises a pressure boosting module, a pressure reducing module, an air compressor controller, a water pump module, a PTC controller and a radiator controller, and the control assembly is arranged on the rear side of the system frame. According to the fuel cell system provided by the utility model, modular design is adopted, system parts are integrated, the integration level is high, and the fuel cell system is easy to assemble and maintain. And a plurality of controllers are integrated into the control assembly, so that the problem of low integration level of a plurality of shells of a plurality of controllers is solved, and the integration level and the reliability of the fuel cell are improved.

Description

Technical Field

[0001] This utility model belongs to the field of fuel cell technology. Specifically, it relates to a fuel cell system, and more specifically, to the design of a highly integrated fuel cell system. Background Technology

[0002] Fuel cells, as electrochemical conversion devices (power generation devices) that directly convert chemical energy into electrical energy, are widely used. Fuel cells are characterized by being clean and pollution-free, and having high energy conversion efficiency, making them an important development direction for fields such as new energy vehicles.

[0003] Currently, with the increasing power demand of fuel cells, fuel cells are becoming larger and larger. Furthermore, the current fuel cell control system has a wide variety of controllers with low integration, which increases the maintenance difficulty and reduces the reliability of existing fuel cells.

[0004] Therefore, promoting the innovative development of fuel cell technology is of great significance. Utility Model Content

[0005] The purpose of this invention is to provide a fuel cell system that addresses the technical problem of low reliability in existing technologies.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a fuel cell system, comprising:

[0007] System framework;

[0008] A fuel cell stack assembly is mounted on the system frame;

[0009] The system auxiliary components include an air system structure, a hydrothermal system structure, and a hydrogen system structure disposed on the system frame;

[0010] A DC-DC converter is mounted on the system frame;

[0011] A control component is disposed on the system frame. The control component includes a boost module, a buck module, and an air compressor controller that are electrically connected to the air system structure, and a water pump module, a PTC controller, and a radiator controller that are electrically connected to the water heating system structure. The control component is disposed on the rear side of the system frame.

[0012] Preferably, the air system structure includes:

[0013] An air compressor is located at the bottom of the system frame;

[0014] A bypass valve is located at the bottom of the system frame;

[0015] An intercooler is located at the bottom of the system frame;

[0016] An air filter is located at the bottom of the system frame.

[0017] Preferably, the hydrothermal system structure includes:

[0018] A water filter is installed on the system frame;

[0019] A deionization device is mounted on the system frame;

[0020] A water pump, connected to the system frame, is located on the left side of the air system structure;

[0021] A heater, connected to the system frame, is located on the left side of the air system structure.

[0022] Preferably, the hydrogen system structure includes:

[0023] A pressure reducing valve is mounted on the system frame;

[0024] A filter is installed on the system framework;

[0025] A hydrogen circulation pump is mounted on the system frame.

[0026] Preferably, the hydrogen system structure further includes:

[0027] The radiator is connected to at least one of the pressure-reducing valve, the filter, and the hydrogen circulation pump.

[0028] Preferably, the fuel cell assembly is disposed on the side of the system frame.

[0029] Preferably, the DC-DC converter is disposed on the upper surface of the system frame.

[0030] Preferably, the system frame is detachably connected to one or more of the fuel cell assembly, the system auxiliary components, the DC-DC converter, and the control components.

[0031] Preferably, the system frame is composed of multiple detachably connected plates.

[0032] The beneficial effects of the fuel cell system and assembly method provided by this utility model are as follows: Compared with the prior art, the fuel cell system of this utility model adopts a modular design, integrates system components, has a high degree of integration, and is easy to assemble and maintain. Components with high failure rates can be directly disassembled for repair or replacement. Integrating numerous controllers into a control component eliminates the low integration problem of multiple controllers in multiple housings, thereby improving the integration and reliability of the fuel cell. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A block diagram illustrating the connection relationship between the control components and other structures used in a fuel cell system according to an embodiment of this utility model;

[0035] Figure 2 A schematic diagram of the structure of a fuel cell system provided in this embodiment of the present invention. Figure 1 ;

[0036] Figure 3 A schematic diagram of the structure of a fuel cell system provided in this embodiment of the present invention. Figure 2 .

[0037] In the diagram: 1. System framework; 2. Fuel cell stack assembly; 3. System auxiliary components; 31. Air system structure; 311. Air compressor; 312. Intercooler; 32. Hydrothermal system structure; 321. Water pump; 322. Heater; 33. Hydrogen system structure; 331. Hydrogen circulation pump; 332. Step-down proportional valve; 333. One-way filter valve; 4. DC-DC converter; 5. Control components; 51. Boost module; 52. Step-down module; 53. Air compressor controller; 54. Water pump module; 55. PTC controller; 56. Radiator controller. Detailed Implementation

[0038] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0039] Please refer to the following: Figures 1 to 3The present invention provides a fuel cell system. The fuel cell system includes a system frame 1, a stack assembly 2, system auxiliary components 3, a DC-DC converter 4, and a control component 5. The stack assembly 2 is mounted on the system frame 1. The system auxiliary components 3 include an air system structure 31, a hydrothermal system structure 32, and a hydrogen system structure 33, all mounted on the system frame 1. The DC-DC converter 4 is mounted on the system frame 1. The control component 5 is mounted on the system frame 1 and includes a boost module 51, a buck module 52, and an air compressor controller 53 electrically connected to the air system structure 31; and a water pump module 54, a PTC controller 55, and a radiator controller 56 electrically connected to the hydrothermal system structure 32. The control component 5 is located at the rear of the system frame 1.

[0040] The assembly process for this fuel cell system is as follows: First, prepare the fuel cell stack assembly 2, system auxiliary assembly 3, DC-DC converter 4, and control assembly 5 in advance. Then, assemble the system frame 1. Finally, install the fuel cell stack assembly 2, system auxiliary assembly 3, DC-DC converter 4, and control assembly 5 onto the system frame 1 respectively.

[0041] This utility model provides a fuel cell system that, compared with existing technologies, adopts a modular design, integrating system components to achieve a high degree of integration. This integration facilitates assembly and maintenance, allowing for direct disassembly, repair, or replacement of components with high failure rates. Integrating numerous controllers into a single control component 5 eliminates the low integration issues associated with multiple controllers and housings, thereby improving the integration and reliability of the fuel cell.

[0042] As one specific implementation of this utility model, please refer to the following: Figures 1 to 3 The air system structure 31 includes an air compressor, a bypass valve, an intercooler, and an air filter. The air compressor 311 is located at the bottom of the system frame 1; the bypass valve is located at the bottom of the system frame 1; the intercooler 312 is located at the bottom of the system frame 1; and the air filter is located at the bottom of the system frame 1.

[0043] As one specific embodiment of this utility model, please refer to Figures 1 to 3The hydrothermal system structure 32 includes a water filter, a deionization device, an electronic water pump 321, and a heater 322. The water filter is mounted on the system frame 1; the deionization device is mounted on the system frame 1; the water pump (i.e., the electronic water pump) 321 is connected to the system frame 1 and is located on the left side of the air system structure 31; the heater 322 is connected to the system frame 1 and is located on the left side of the air system structure 31. The water filter and deionization device are installed at the inlet of the fuel cell to filter out impurities in the coolant when replenishing it. The deionization device is installed after the water filter. The electronic water pump 321 is connected between the radiator and the fuel cell to form a coolant circulation loop. The temperature control of the fuel cell system is achieved by controlling the speed of the electronic water pump 321 and the speed of the radiator. The heater 322 is connected in parallel with the radiator through a branch pipe and is used for cold start in low-temperature environments on a side branch of the main cooling water circuit.

[0044] As one specific embodiment of this utility model, please refer to Figures 1 to 3 The hydrogen system structure 33 includes: a pressure reduction proportional valve 332, a filter, and a hydrogen circulation pump 331. The pressure reduction proportional valve 332 is disposed on the system frame 1; the filter is disposed on the system frame 1; and the hydrogen circulation pump 331 is disposed on the system frame 1.

[0045] Hydrogen gas passes through a one-way filter valve 333 and then enters the hydrogen fuel cell stack (stack assembly 2) via a pressure-reducing proportional valve 332, providing fuel for the fuel cell. The pressure-reducing proportional valve 332 controls the pressure of the hydrogen intake gas by setting the inlet and outlet openings. Unused hydrogen enters the fuel cell through the stack's hydrogen outlet and enters the hydrogen circulation pump, where it is repressurized and returned to the inlet for reuse. To ensure the proper functioning of the hydrogen circulation pump, a separate radiator is connected. This small radiator is used to cool components including the DC-DC converter, intercooler, and hydrogen circulation pump.

[0046] In this embodiment, the hydrogen system structure 33 further includes a radiator, which is connected to at least one of the following structures: a pressure reducing valve, a filter, and a hydrogen circulation pump 331.

[0047] As one specific embodiment of this utility model, please refer to Figures 1 to 3 The fuel cell stack assembly 2 is located on the side of the system frame 1. This location facilitates voltage monitoring of the fuel cell stack assembly 2, ensuring normal discharge of each unit. It also facilitates maintenance, allowing for rapid location of the fault point in case of a malfunction or abnormal discharge in the fuel cell stack assembly 2.

[0048] As one specific embodiment of this utility model, please refer to Figures 1 to 2The DC-DC converter 4 is located on the upper surface of the system frame 1. Utilizing the flat surface of the system frame 1 to place the DC-DC converter 4 on the upper surface allows for better and more efficient use of space. Furthermore, placing it on the upper surface ensures effective heat dissipation for the DC-DC converter 4 and prevents interference with other components.

[0049] As one specific embodiment of this utility model, please refer to Figures 1 to 2 The system frame 1 is detachably connected to one or more of the following components: fuel cell assembly 2, system auxiliary assembly 3, DC-DC converter 4, and control assembly 5.

[0050] In this embodiment, the system frame 1 is composed of multiple detachably connected plates. Specifically, the system frame 1 is made of steel, and five sides of the system frame 1 are fixed with bolts. Fixing points and insulating feet are provided on both the front and rear sides of the system frame 1. The fixing points are used to connect and fix related components such as the hydrogen circulation pump, hydrogen proportioning valve, inlet and outlet valves, and heater, resulting in a more centralized structural design.

[0051] This utility model also provides a method for assembling a fuel cell system, characterized by the following steps: preparing four modules, namely, the fuel cell stack assembly 2, the system auxiliary assembly 3, the DC-DC converter 4, and the control assembly 5; assembling the system frame 1; and sequentially installing the four modules, namely, the fuel cell stack assembly 2, the system auxiliary assembly 3, the DC-DC converter 4, and the control assembly 5, onto the system frame 1.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fuel cell system characterized by comprising: include: System framework; A fuel cell stack assembly is mounted on the system frame; The system auxiliary components include an air system structure, a hydrothermal system structure, and a hydrogen system structure disposed on the system frame; A DC-DC converter is mounted on the system frame; A control component is disposed on the system frame. The control component includes a boost module, a buck module, and an air compressor controller that are electrically connected to the air system structure, and a water pump module, a PTC controller, and a radiator controller that are electrically connected to the water heating system structure. The control component is disposed on the rear side of the system frame.

2. A fuel cell system as claimed in claim 1, characterized in that The air system structure includes: An air compressor is located at the bottom of the system frame; A bypass valve is located at the bottom of the system frame; An intercooler is located at the bottom of the system frame; An air filter is located at the bottom of the system frame.

3. A fuel cell system as described in claim 1, characterized in that, The hydrothermal system structure includes: A water filter is installed on the system frame; A deionization device is mounted on the system frame; A water pump, connected to the system frame, is located on the left side of the air system structure; A heater, connected to the system frame, is located on the left side of the air system structure.

4. A fuel cell system according to claim 1, wherein The hydrogen system structure includes: A pressure reducing valve is mounted on the system frame; A filter is installed on the system framework; A hydrogen circulation pump is mounted on the system frame.

5. A fuel cell system as described in claim 4, characterized in that, The hydrogen system structure also includes: The radiator is connected to at least one of the pressure-reducing valve, the filter, and the hydrogen circulation pump.

6. A fuel cell system according to claim 1, wherein The fuel cell assembly is disposed on the side of the system frame.

7. A fuel cell system according to claim 1, wherein The DC-DC converter is located on the upper surface of the system frame.

8. A fuel cell system according to any one of claims 1-7, characterized in that, The system framework is detachably connected to one or more of the fuel cell assembly, the system auxiliary components, the DC-DC converter, and the control components.

9. A fuel cell system according to claim 1, wherein The system framework is composed of multiple detachable and connected plates.

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